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Accumulated Other Comprehensive Income (Reclassification Out Of Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Sales $ 41,556 $ 38,207
Less: Income tax expense 210 (138)
Total reclassificaitons from AOCI 183  
Unrealized Gains (Losses) on Cash Flow Hedges [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total reclassificaitons from AOCI 163  
Foreign Currency Translation Adjustments [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total reclassificaitons from AOCI 20  
Reclassification Out Of Accumulated Other Comprehensive Income [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Total reclassificaitons from AOCI 183  
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Cash Flow Hedges [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Sales 296 $ (141)
Less: Income tax expense 133  
Total reclassificaitons from AOCI 163  
Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Foreign Currency Translation Adjustments [Member]    
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]    
Other, net $ 20